Fuel cell system and fuel cell vehicle

Abstract

A fuel cell system and a fuel cell vehicle that prevent deformation of a fuel cell case when an external force is applied are provided. A fuel cell system includes a fuel cell case configured to contain a fuel cell; and an auxiliary device fixed to a side surface of the fuel cell case. The auxiliary device includes: a first support part fixed to the fuel cell case; a second support part fixed to the fuel cell case at a position spaced apart from the first support part; and a main body part supported by the first support part and the second support part spaced apart from the fuel cell case. The first support part is broken before the second support part is broken when an external force is applied to the main body part in a direction approaching the fuel cell case.

What is claimed is: 
     
       1. A fuel cell system comprising:
 a fuel cell case configured to contain a fuel cell; and 
 an auxiliary device fixed to a side surface of the fuel cell case, wherein 
 the auxiliary device comprises:
 a first support part fixed to the fuel cell case; 
 a second support part fixed to the fuel cell case at a position spaced apart from the first support part; and 
 a main body part supported by the first support part and the second support part spaced apart from the fuel cell case, wherein 
 the first support part extends outward from the main body part at a position above a center part of the side surface, the first support part being fixed to a boss or a rib that stands on the side surface, and 
 the second support part extends downward from the main body part at a position below the center part of the side surface, further extends toward the side surface, and then further extends downward, the second support part being fixed to a boss or a rib that stands on the side surface. 
 
 
     
     
       2. The fuel cell system according to  claim 1 , wherein
 the main body part includes an abutting part and is spaced apart from the fuel cell case, the abutting part being configured to abut against the fuel cell case if the first support part is broken by the external force, 
 the fuel cell case includes a contact part that is configured to contact the abutting part if the first support part is broken by the external force, and 
 the contact part is provided at a position closer to an edge part of the side surface than a center part of the side surface. 
 
     
     
       3. The fuel cell system according to  claim 2 , wherein the abutting part is provided at a position closer to the first support part than the second support part. 
     
     
       4. The fuel cell system according to  claim 2 , wherein the first support part and the abutting part are disposed along a ridgeline formed by the side surface and an upper surface of the fuel cell case. 
     
     
       5. The fuel cell system according to  claim 4 , wherein the contact part is formed in a rib shape along the ridgeline. 
     
     
       6. The fuel cell system according to  claim 2 , wherein
 the auxiliary device is a valve for controlling cooling water for cooling the fuel cell, and 
 the abutting part is a pressure adjusting part for adjusting an internal pressure of the main body part. 
 
     
     
       7. The fuel cell system according to  claim 1 , wherein the first support part comprises a break induction part configured to receive stress concentration when the first support part is broken by the external force. 
     
     
       8. The fuel cell system according to  claim 1 , wherein the second support part comprises a connection part extending in a direction orthogonal to the side surface and connecting the main body part to the fuel cell case. 
     
     
       9. A fuel cell vehicle on which the fuel cell system according to  claim 1  is mounted, wherein
 the fuel cell system is disposed in such a way that the side surface becomes parallel to a side surface of the fuel cell vehicle.